CN105008213B

CN105008213B - Vehicle body front structure

Info

Publication number: CN105008213B
Application number: CN201480011243.3A
Authority: CN
Inventors: 西田玄; 松井宣明; 祝原礼司; 鲇川达也
Original assignee: Toyota Motor Corp
Current assignee: Toyota Motor Corp
Priority date: 2013-01-25
Filing date: 2014-01-08
Publication date: 2017-09-26
Anticipated expiration: 2034-01-08
Also published as: CN105008213A; EP2949550B1; MX2015009573A; MX363108B; US20150360633A1; US9539968B2; EP2949550A4; JPWO2014115579A1; WO2014115579A1; EP2949550A1; JP5949956B2; BR112015017653A2

Abstract

Obtain can preventing or suppress influence of all side beam to collision performance and the vehicle body front structure of body distortion caused by small cover attack is suppressed by the connecting member for linking all side beam and mud guard portion.Vehicle body front structure (10) possesses：All side beam (12), front flange (30) is formed with vehicle front；Energy-absorbing case (14), is engaged at rear flange (40) place for being formed at rear vehicle end with front flange (30)；And connecting member (46), rear vehicle end is engaged in mud guard portion (44), and the state for being formed at the engaging plate portions of vehicle front side (52) to be sandwiched between front flange (30) and rear flange (40) is engaged in front flange (30), also, tilted relative to the front for the part that all side beam (12) is located on the outside of overall width direction in the way of rear side leaves all side beam (12) to overall width direction outside compared with vehicle front side in a top view.

Description

Vehicle body front structure

Technical field

The present invention relates to vehicle body front structure.

Background technology

The known vehicle front for having the duct member that rear vehicle end is fixed on to the upper beam along the upper limb of mud guard is with insertion The state of front side frame is fixed on the structure of the underbeam (for example, referring to Japanese Unexamined Patent Publication 2009-171032 publications).Moreover, Know the face for having the front end installed connecting member in the leading section of coaming plate reinforcer and the connecting member will be installed in front side frame The structure fastened in the lump between frame and energy-absorption box (for example, referring to Japanese Unexamined Patent Publication 2005-231435 publications).

The content of the invention

The invention problem to be solved

In the structure of Japanese Unexamined Patent Publication 2009-171032 publications, through hole is formed with front side frame, the through hole Influence the energy absorption characteristics during frontal collision of front side frame.Therefore, the front side frame for being formed with through hole requires special Impingement designed.Moreover, in the structure of Japanese Unexamined Patent Publication 2009-171032 publications and Japanese Unexamined Patent Publication 2005-231435 publications, The front end to the duct member of stretching, face on the outside of overall width direction of front side frame is in a top view in the straight line along overall width direction Shape, therefore also have room for improvement from the viewpoint of the deformation suppression of car room caused by small cover attack.

Present invention aims at obtain preventing or suppress influence of all side beam to collision performance and by by the front side Beam suppresses the vehicle body front structure of body distortion caused by small cover attack with the connecting member of mud guard portion link.

Scheme for solving problem

The vehicle body front structure of the first scheme of the present invention possesses：All side beam, is formed with front side of vehicle fore-and-aft direction Front flange；Energy-absorbing case, is engaged at the rear flange that is formed of rear side of vehicle fore-and-aft direction with the front flange；And linking part Part, the rear side of vehicle fore-and-aft direction is engaged with mud guard portion, and the engaging plate portions that are formed of front side of vehicle fore-and-aft direction with The state being sandwiched between the front flange and the rear flange is engaged in the front flange, also, relative to all side beam position The front side of the vehicle fore-and-aft direction of part on the outside of overall width direction is with a top view compared with the front side of vehicle fore-and-aft direction The mode that rear side leaves all side beam to overall width direction outside is tilted.

According to above-mentioned scheme, connecting member links mud guard portion and the vehicle front side of all side beam.That is, connecting member Vehicle body is supported on the outside of the overall width direction relative to all side beam and relative to the vehicle front side in mud guard portion.For example, producing To the frontal collision of the mode of input load on the outside of the overall width direction relative to all side beam, (hereinafter referred to as " small shell is touched Hit ") in the case of, connecting member (inclined part in the top view of front) is disturbed with collision other side.Thus, this car Stagger with collision other side along overall width direction, suppress intrusion of the collision to the vehicle body of this car of direction.

Here, the engaging plate portions of connecting member are sandwiched between the rear flange of the front flange of all side beam and energy-absorbing case, at least connect Together in front flange.Energy absorption characteristics during therefore, it is possible to prevent or suppress energy-absorbing case, all side beam to collision are (for above touching The collision performance hit) impact, and connecting member can be set.

So, in the vehicle body front structure of such scheme, it can prevent or suppress all side beam to collision performance Influence, and by the way that the connecting member that all side beam and mud guard portion link is become to suppress vehicle body caused by small cover attack Shape.

In above-mentioned scheme, Ke Yishi, the connecting member is configured to include orthogonal cross-sections orthogonal to the longitudinal direction The main body of the engaging plate portions is bonded to for closed cross sectional structure and on front side of vehicle fore-and-aft direction, the engaging plate portions are constituted For comprising to clip the two plates that the state of the main body is engaged with the main body respectively by arc-welding in sectional view.

According to above-mentioned scheme, engaging plate portions be configured to include two plates, the two plates by arc-welding respectively with envelope The main body engagement of closing cross section structure.Thus, the main body of engaging plate portions and closed cross sectional structure is securely engaged.

In above-mentioned scheme, Ke Yishi, the connecting member is by fastener by the engaging plate portions and the lordosis Edge and rear flange are fastened in the lump, and the mud guard portion will be anchored on rear side of vehicle fore-and-aft direction by fastener.

According to above-mentioned scheme, all side beam, mud guard portion are all engaged in before and after connecting member by fastening structure, therefore Become easy with not possessing the generalization of the body structure of the vehicle of the connecting member.

In above-mentioned scheme, Ke Yishi, the front flange is with opposite with the medial surface in the overall width direction of all side beam Side of sidewall portion.

According to above-mentioned scheme, in small cover attack, from collision to the direction connecting member (rake in top view Point) input rear view of vehicle load.Then, by the connecting member to rear view of vehicle displacement (deformation), by the front end of all side beam Stretched to overall width direction foreign side.Moreover, by the side of sidewall portion of front flange, the front of all side beam is outside from overall width direction inner side Side's pressing.Thus, dislocation of this car with collision other side on overall width direction can be promoted.

In above-mentioned scheme, Ke Yishi, the engaging plate portions at least in all side beam relative to overall width direction Center on the inside of overall width direction by being partially engaged to the front flange.

According to above-mentioned scheme, in small cover attack, if inputting rear view of vehicle to direction connecting member from collision Load, then by the connecting member to rear view of vehicle displacement (deformation), the front end of all side beam is stretched to overall width direction foreign side.This When, the leading section of all side beam is effectively drawn in the overall width direction inboard portion for being bonded to connecting member to overall width direction foreign side Stretch.Thus, dislocation of this car with collision other side on overall width direction can be promoted.

In above-mentioned scheme, Ke Yishi, the engaging plate portions are central relative to overall width direction in all side beam Inboard portion and Outboard Sections by overall width direction are engaged in the front flange.

According to above-mentioned scheme, in small cover attack, if inputting rear view of vehicle to direction connecting member from collision Load, then by the connecting member to rear view of vehicle displacement (deformation), the front end of all side beam is stretched to overall width direction foreign side.This When, the inside and outside two parts of the leading section of all side beam in the overall width direction for being bonded to connecting member share load and by effectively to car Cross direction foreign side stretches.Thus, dislocation of the Ben Che with collision other side on overall width direction can be effectively facilitated.

Invention effect

The present invention has following excellent effect：It can prevent or suppress influence of all side beam to collision performance, and pass through The all side beam and the connecting member of mud guard portion link are suppressed into body distortion caused by small cover attack.

Brief description of the drawings

Fig. 1 is by the stereogram of the major part enlarged representation of the vehicle body front structure of embodiments of the present invention.

Fig. 2 is the integrally-built stereogram of outline for the vehicle body front structure for representing embodiments of the present invention.

Fig. 3 is by the top view of the major part enlarged representation of the vehicle body front structure of embodiments of the present invention.

Fig. 4 is by the side view of the major part enlarged representation of the vehicle body front structure of embodiments of the present invention.

Fig. 5 is Fig. 4 sectional view along 5-5 lines.

Fig. 6 is Fig. 3 sectional view along 6-6 lines.

Fig. 7 is Fig. 3 sectional view along 7-7 lines.

Fig. 8 A are that the small shell for the vehicle body front structure for schematically showing the first embodiment for the present invention is touched Hit the top view of the action at initial stage.

Fig. 8 B are the small shells for the vehicle body front structure for being shown schematically in the first embodiment for the present invention The top view for the state that collision energy-absorbing case is compressed.

Fig. 8 C are the small shells for the vehicle body front structure for being shown schematically in the first embodiment for the present invention The top view for the state that obstacle is disturbed with connecting member during collision.

Fig. 8 D are the small shells for the vehicle body front structure for being shown schematically in the first embodiment for the present invention During collision from top view from connecting member to the state of all side beam used load.

Fig. 8 E are the small shells for the vehicle body front structure for being shown schematically in the first embodiment for the present invention During collision due to the load from connecting member all side beam bend state top view.

Fig. 9 is by the stereogram of the major part enlarged representation of the vehicle body front structure of second embodiment of the present invention.

Figure 10 is by the top view of the major part enlarged representation of the vehicle body front structure of second embodiment of the present invention.

Figure 11 is by the side view of the major part enlarged representation of the vehicle body front structure of second embodiment of the present invention.

Figure 12 is to pull down the bumper reinforcement of the vehicle body front structure of second embodiment of the present invention, energy-absorbing case etc. And represent the stereogram of major part.

Embodiment

(first embodiment)

On the vehicle body front structure 10 of the first embodiment of the present invention, illustrated based on Fig. 1~Fig. 8 E.In addition, The arrow FR suitably marked in figure represents the front direction of vehicle fore-and-aft direction, and arrow UP represents the upper direction of vehicle above-below direction, Arrow RH represents that, towards right direction (overall width direction one) side during front direction, arrow LH is represented towards left direction during front direction (overall width direction is another) side.In the following description, as long as no special record, using it is front and rear, up and down, the feelings in the direction of left and right Condition means that the front and rear of vehicle fore-and-aft direction, above and below vehicle above-below direction, towards left and right during direct of travel.

[basic structure of body forward structure]

Fig. 2 is with the three-dimensional anterior schematic configuration for illustrating the automobile A for applying vehicle body front structure.As shown in the drawing, Automobile A automobile body B possesses left-right pair of front side beam 12.Each all side beam 12 is longer in the longitudinal direction respectively, along overall width direction simultaneously Row configuration.Each all side beam 12 is engaged via energy-absorbing case 14 with bumper reinforcement 16 longer on overall width direction.That is, left and right Energy-absorbing case 14 front end between be set up in bumper reinforcement 16.

The bumper reinforcement 16 of the embodiment is in sectional view orthogonal to the longitudinal direction, in Type B section.It is specific and Speech, forms between 3 flanges of upper, middle and lower and is engaged on the back plate 16R of a pair of recesses up and down of open front above-mentioned each flange Foreboard 16F, thus constitute above and below the arrangement of 2 closed cross-section portions Type B section bumper reinforcement 16.In addition, envelope up and down Aft-opening recess is set between closing cross section portion.And, although diagram is omitted, but the envelope above and below the composition in foreboard 16F The part of the antetheca of closing cross section, can be upwardly formed in the way of to open front rearward (the interior side of closed cross-section) in overall width side Prominent crimping.According to the structure so illustrated, bumper reinforcement 16 turns into relative to knot of the bending with high rigidity, intensity Structure.

Moreover, being provided with radiator support element 18 between the front portion of all side beam 12 of left and right.Radiator support element 18 leads to Cross and engage at upper beam 18U opposite up and down, underbeam 18L overall width direction two ends in pair of right and left curb girder 18S, thus included in master Rectangular box-like part is constituted in view.In this embodiment, set upper beam 18U, underbeam 18L overall width direction central portion Between the center sill 18C that links.In addition, the curb girder 18S of the embodiment has the extension stretched out to overall width direction foreign side, should Extension is sandwiched between front flange 30 described later, rear flange 40 together with flange 52F described later and fastens (reference picture in the lump 5)。

On the other hand, the rear end side of each all side beam 12 to engine room E and car room the C instrument board 20 being separated with connecing Close.More specifically, the rear portion of all side beam 12 is set to the rear side inclined pedal position 12K of mode more underlying than front side, should Pedal position 12K is engaged with the front-surface side of instrument board 20.Pedal position 12K posterior end is linked to being connect below bottom plate (not shown) Reinforcer under the bottom plate of conjunction.The channel part 20T linked with backplane channel T is formed with the overall width direction central portion of instrument board 20.

Moreover, being provided with mud guard 22 on the outside of the overall width direction relative to each all side beam 12.In this embodiment, each gear Mud plate 22 forms the wheelhouse portions H that houses into front-wheel (not shown) and can turn to, and is integrally formed with suspension tower 22S.Respectively Suspension tower 22S is supported to the upper end of suspension (not shown), and the suspension is propped up the front-wheel being housed in wheelhouse portions H Support.Moreover, being provided with the suspension beam 24 for supporting above-mentioned suspension on each all side beam 12.In this embodiment, suspension Beam 24 is set to the suspension beam of I types longer on overall width direction, at overall width direction two ends, will constitute the not shown of above-mentioned suspension Underarm support can be rotated around axle along the longitudinal direction.

The suspension beam 24 is engaged at multiple positions of separate front and back with all side beam 12.Specifically, the overall width of suspension beam 24 The front portion of two outer ends in direction is engaged in the pars intermedia of the fore-and-aft direction of all side beam 12 via arm member 24A from below.It is another Aspect, although diagram is omitted, but the rear portion of two outer ends in the overall width direction of suspension beam 24 is directly or indirectly engaged in front side The pedal position 12K of beam 12 posterior end portion.

Moreover, the overall width direction of each mud guard 22 is inner and part of above-below direction lower end is engaged with all side beam 12.It is another Aspect, the overall width direction outer end and the part of above-below direction upper end of mud guard 22 are used as skeleton portion with longer in the longitudinal direction The coaming plate upper beam 26 of part is engaged.Each coaming plate upper beam 26 is configured in the front upper part of automobile body B along overall width direction outer end, rearward end Engaged with cover portion (not shown).In other words, the rear end of coaming plate upper beam 26 is supported in instrument board 20 via cover portion.Moreover, respectively enclosing Upper end (upper beam 18U car of the front of plate upper beam 26 via extension 28 with the curb girder 18S of composition radiator support element 18 Cross direction outer end) link.

The front flange 30 for being used for engaging with energy-absorbing case 14 is provided with the front end of each all side beam 12, details are described below.Before Flange 30 is created as in aft-opening top view substantially carnival hat shape and part longer in the vertical direction.The front flange 30 protrude downwards relative to all side beam 12.Also, each bottom of front flange 30 overall width direction outer end anterior with suspension beam 24 By linking as the underbeam 32 of part longer in the longitudinal direction between portion.

On the other hand, on the forward face of the bottom of each front flange 30, longer duct member 34 in the longitudinal direction The flange 34F that rear end is set is engaged by the fastening of fore-and-aft direction.Each duct member 34 is being formed at the convex of respective rear end In the state of edge 34F and flange body 30F bottom surfaces pair, pass through the tight of the progress of the fasteners such as the bolt shown in Fig. 1, nut 39 Gu and it is engaged.Also, downside bumper reinforcement 36 is set up between the front end of the duct member 34 of left and right.

In structure described above, the power unit P (ginsengs as automobile A driving source are configured with engine room E According to Fig. 3).Power unit P is directly or indirectly supported by the structure position of the automobile body Bs such as all side beam 12 and suspension beam 24 of left and right. Power unit P is configured between all side beam of left and right.

[major part structure]

(flange fastening structure)

The major part of vehicle body front structure 10 is substantially symmetrically constituted, therefore in the following description, mainly Structure on the left of explanation.As shown in figure 1, being bonded to above-mentioned front flange 30 in the front end of all side beam 12.Front flange 30 is at least wrapped Include the flange body 30F towards front, a pair of sidewalls 30S rearward extended from flange body 30F left and right ends, by flange The bottom wall 30B that main body 30F and a pair of sidewalls 30S lower ends link.

As shown in Fig. 3, Fig. 6 etc., at the flange body 30F back side provided with multiple (in this embodiment, with front view 4 are provided with the mode of the longer rectangular shape of above-below direction) welded nut 38.Moreover, as depicted in figs. 3 and 5, front flange 30 Overall width direction on the inside of side wall 30S with all side beam 12 be that side 12S1 is contacted or pole towards the medial surface on the inside of overall width direction Closely configure.Side wall 30S on the inside of the overall width direction is equivalent to side of sidewall portion.

On the other hand, as shown in figure 1, being provided with rear flange 40 in the rear end of energy-absorbing case 14.Rear flange 40 is with perisporium 40S from flange The mode that main body 40F periphery is protruded forwards shortlyer is constituted.Although diagram omit, flange body 40F with it is convex The edge main body 30F corresponding position of welded nut 38 is formed with bolt through hole.

Energy-absorbing case 14 is fastened rear flange 40 and front flange 30 by the bolt 42 screwed togather with welded nut 38, is thus connect Together in the front end of all side beam 12.Also, sandwiched between the rear flange 40 of the energy-absorbing case 14 and the front flange 30 of all side beam 12 and The flange 52F of the engaging plate portions as connecting member 46 described later is fastened in the lump.

In addition, welded nut 38 and bolt 42 screw togather 4 formed fastening positions in all side beam 12 and length side Into orthogonal orthogonal sectional view, both sides up and down relative to the center line that will be divided above and below the section are arranged respectively at, relative In the left and right sides for the center line for dividing the section or so.

(coaming plate upper beam)

Plate-like end plate 44 forward is bonded in the front end of coaming plate upper beam 26.End plate 44 connects from coaming plate upper beam 26 Leading edge of the position along mud guard 22 is closed to extension on the inside of overall width direction, also the leading edge with the mud guard 22 is engaged.In end plate 44 With the junction surface of coaming plate upper beam be overall width direction outer end be the substantially square shape in front view rectangular panel portion 44A.End plate The position also engaged with the leading edge of mud guard 22 in 44 is in generally arcuate, the overall width side with rectangular panel portion 44A in front view Link to the end of inner side and downside.

In this embodiment, structure mud guard 22, coaming plate upper beam 26 and end plate 44 engaged or these Any one in the monomer of part or two mud guard portions equivalent to the present invention.

(connecting member)

Vehicle body front structure 10 possesses the connecting member 46 for linking the front end of coaming plate upper beam 26 and the front end of all side beam 12. The major part of connecting member 46 includes the pipe portion 48 of the main body as closed cross sectional structure, after the rear end setting of pipe portion 48 Flange 50, the front side junction surface 52 set in the front end of pipe portion 48.

As shown in Figures 3 and 4, rear flange 50 is engaged by bolt 58 with the screwing togather formed fastening of welded nut 59 In the rectangular panel portion 44A of end plate 44, the front end of coaming plate upper beam 26 is thus engaged in.That is, connecting member 46 connects via end plate 44 Together in coaming plate upper beam 26.Therefore, connecting member 46 is big relative to the coaming plate upper beam 26 i.e. fastening direction and fore-and-aft direction of end plate 44 Body is consistent.

As shown in figure 1, pipe portion 48 is for example formed by the bending of tubing, in order to along the longitudinal direction, above-below direction and car Cross direction links the front end of the different coaming plate upper beam 26 in position and the front end of all side beam 12, and bends as described later.At this In embodiment, pipe portion 48 is formed in the way of rear portion 48R, pars intermedia 48C and front portion 48F are linked in the order from rear.

Rear portion 48R is formed as arc-shaped in side view, upper rear end by by fore-and-aft direction as tangential direction in the way of match somebody with somebody Put and engaged with rear flange 50.Anterior 48F be formed as with a top view rear side compared with front side it is more inclined relative to all side beam 12 Inclined linear to the mode on the outside of overall width direction, its front end 48FF is set on the outside of the overall width direction of energy-absorbing case 14 before The openend of side opening in side and overall width direction.Pars intermedia 48C is formed in the way of rear portion 48R and front portion 48F is linked.Specifically For, pars intermedia 48C includes the line part, this is straight of the tangential direction along rear portion 48R preceding lower end and forward downward extension The preceding lower end in line portion smoothly links with front portion 48F rear end (in the way of as along the border of respective tangential direction) Circular-arc part.

The pipe portion 48 is in a top view as shown in figure 3, mainly rear portion 48R is in linear, pars intermedia along the longitudinal direction 48C and front portion 48F are formed as tilting in the way of rear side is more biased towards on the outside of overall width direction compared with front side relative to all side beam 12 It is linear.In the top view, the end on the inside of the overall width direction of the front end 48FF in anterior 48F is (in Fig. 1, aftermentioned Flange 52F block) relative to all side beam 12 and energy-absorbing case 14 junction on the outside of overall width direction (near).

Moreover, pipe portion 48 is in side view as shown in figure 4, front portion 48F (is mainly hidden by flange 52F described later in Fig. 4 The part of gear) it is set to horizontal part approximately along horizontal plane (length direction of all side beam 12).Also, before this is approximate horizontal Portion 48F is bonded to front side junction surface 52.In other words, main part from preceding side engagement portion 52 in side view along the length of all side beam 12 The part that degree direction (horizontal direction) rearward extends is set to anterior 48F, horizontal parts of the anterior 48F equivalent to the present invention.

Front side junction surface 52 include with the rear flange 40 of energy-absorbing case 14 and the front flange 30 of all side beam 12 fasten in the lump it is convex Edge 52F, the pipe junction surface 52C engaged with the anterior 48F of pipe portion 48.Specifically, as shown in Fig. 1,3~5, front side junction surface 52 It is mainboard 54 respectively as sheet material, two modular constructions of reinforcing plate 55.Also, flange 52F is made up of mainboard 54, is formed as court Tabular forwards, and it is formed with 4 bolt through holes for above-mentioned bolt insertion (diagram is omitted).Perisporium 54S from this The periphery of mainboard 54 is forwards shortlyer prominent.

Part on the outside of the overall width direction of the part for constituting flange 52F in mainboard 54 is with along the anterior 48F of pipe portion 48 The mode of length direction tilt, and form the recess 54N being recessed in semicircle in the way of covering the anterior rear.Such as Shown in Fig. 7, reinforcing plate 55 is in section carnival hat shape in the way of the pipe portion 48 for being embedded in recess 54N to be surrounded.Therefore, pipe is engaged Portion 52C is mainboard 54 and reinforcing plate 55 is respectively relative to the structure that the both sides of pipe portion 48 vertically are stretched out.

Also, pipe junction surface 52C is embedded in the state of recess 54N pipe portion 48 covers reinforcing plate 55 in anterior 48F, By the way that each portion is welded, and pipe portion 48 is engaged with front side junction surface 52.More specifically, in the arc-welding portion AW1 shown in Fig. 7, By implement front portion 48F on length direction (orthogonal direction orthogonal with the section shown in Fig. 7) it is longer (continuously or intermittently, It is same as below) welding, reinforcing plate 55 is engaged with mainboard 54.Moreover, in arc-welding portion AW2, by implementation front portion 48F in length Welding longer on direction is spent, mainboard 54 is engaged with the anterior 48F of pipe portion 48.And then, in arc-welding portion AW3, before implementation Portion 48F welding longer in the longitudinal direction, reinforcing plate 55 is engaged with the anterior 48F of pipe portion 48.

Reinforcing plate 55 is overlapped up and down across recess 54N two positions with mainboard 54, and arc-welding portion AW1 is set to along reinforcement The fillet welding (lap joint) of edge part of the plate about 55.Moreover, the above-below direction pars intermedia in reinforcing plate 55 is formed with preceding (overlap joint connects for the fillet welding that longer elongated hole 55H on portion 48F length direction, arc-welding portion AW3 are set to along elongated hole 55H lower edge Head).On the other hand, arc-welding portion AW2 by the side face of recess 54N openend and pipe portion 48 (anterior 48F) along anterior 48F's Length direction carries out arc-welding and formed.

On the front side junction surface 52, it is believed that flange 52F is a modular construction of mainboard 54, and pipe junction surface 52C is main Two modular constructions of plate 54 and reinforcing plate 55.

In connecting member 46 described above, rear flange 50 is engaged in end plate 44 by the fastening from front, and preceding The flange 52F of side engagement portion 52 is anchored on rear flange 40 and front flange in the lump with the state for being sandwiched in rear flange 40 and front flange 30 30.Thus, connecting member 46 turns into the structure for linking the front end of coaming plate upper beam 26 and the front end of all side beam 12.

In other words, the connecting member 46 of the embodiment is to the shape stretched out on the outside of the overall width direction relative to all side beam 12 Under state, the skeleton part for being supported in all side beam 12 and coaming plate upper beam 26 can be used as.Also, as shown in figure 3, connecting member 46 is set For the structure also significantly stretched out relative to bumper reinforcement 16 to the outside in overall width direction.Thus, connecting member 46 is preceding Curb girder 12 under the collision form on the outside of overall width direction, can as the impact load substantial input site.

Also, in this embodiment, as described above, one of the front of the connecting member 46 i.e. front portion of pipe portion 48 48F, pars intermedia 48C and front side junction surface 52 pipe junction surface 52C are with rear side in a top view than front side further off all side beam 12 Mode tilt.Moreover, as shown in figure 3, constitute connecting member 46 pipe portion 48 front end 48FF than all side beam 12 front end to Front is protruded.

(distance piece)

As shown in Figures 1 and 3, in the side 12S2 of the overall width direction foreign side of all side beam 12 relative to connecting member 46 Distance piece 56 is provided with for the part on the inside of overall width direction.In other words, distance piece 56 is configured at is located at all side beam 12 in a top view With the part between connecting member 46.Moreover, as shown in Fig. 4 as side view, distance piece 56 along the vertical direction with all side beam 12 and the part of front of connecting member 46 overlappingly configure.

More specifically, distance piece 56 relative to constitute connecting member 46 pipe portion 48 anterior 48F, in front view (Fig. 3 arrow X is regarded) is overlapping along overall width direction and above-below direction, along front and back under side view observation (Fig. 3 arrow Y is regarded, Fig. 4) To and above-below direction it is overlapping.That is, distance piece 56 and the anterior 48F of pipe portion 48 is configured opposite to each other.Moreover, distance piece 56 can also be made For the structure configured opposite to each other as the pipe junction surface 52C of opposite face with the front side junction surface 52 of connecting member 46.

Thus, in the case of bearing load backward in connecting member 46 and deforming, the pipe portion of the connecting member 46 is constituted 48 anterior 48F (part at the front side junction surface 52 being fitted together to) turns into the structure disturbed with distance piece 56.Distance piece 56 In, with the part that the connecting member 46 that so deforms is disturbed be set to in a top view in the lump towards on the outside of overall width direction and The inclined inclined plane 56C of mode in front.

Distance piece 56 is engaged with the power unit P that is located relative in all side beam 12 slightly by the part in front, and in the portion Divide the side 12S2 from all side beam 12 protruding outside to overall width direction.In this embodiment, as distance piece 56 relative to preceding The connected structure of curb girder 12, as shown in Figures 3 and 4, bolt is included using at the flange 56F stretched out forwards, backwards of distance piece 56 The fastening of fastener formation including 60.

The distance piece 56 with connecting member 46 in the case where disturbing as described above, as will come from the linking part The load transmitting components function that the load of part 46 is transmitted to all side beam 12.Pass through the load transmission, this implementation as be described hereinafter The Action Specification of mode like that, promotes the bending near power unit P of all side beam 12.

As long as distance piece 56 as described above as load transmitting components function, can use aluminium (or its conjunction Gold), the material of the light weight (low-density) such as resin constitutes.

[effect]

Next, the effect of explanation first embodiment.

(effect during small cover attack)

On apply said structure vehicle body front structure 10 automobile A produce collision body (obstacle Br) with relative to preceding The collision of the mode collided on the outside of the overall width direction of curb girder 12 i.e. small cover attack when effect, reference picture 8A~Fig. 8 E Illustrate.In illustrated example, situation about being collided on the outside of the overall width direction for showing obstacle Br and all side beam 12 in left side.Separately Outside, in Fig. 8 B~Fig. 8 E, the diagram of the bumper reinforcement of collision rift etc. is omitted.

At the initial stage of above-mentioned small cover attack, as shown in Figure 8 A, before obstacle Br is into bumper reinforcement 16 The load of the overall width direction Outboard Sections input of curb girder 12 backward.Pass through the guarantor for the high intensity for being set to Type B section as described above, working as When dangerous thick stick reinforcer 16 is to the transmission impact load of energy-absorbing case 14, the energy-absorbing case 14 is pressed in the longitudinal direction like that as shown in Figure 8 B Contracting.Thus, the effect of the energy absorption at collision initial stage is played.

Next, as shown in Figure 8 C, when obstacle Br reaches the position disturbed with connecting member 46, connecting member 46 The anterior 48F inclined in a top view of pipe portion 48 produce load Fy square in overall width direction.Load Fy is as making automobile A Played a role with the power in the obstacle Br directions separated along overall width direction.That is, due to connecting member 46 and obstacle Br interference, produce Automobile A and dislocation of the obstacle Br on overall width direction, promote interlocking for automobile A and obstacle Br.Thus, can suppress obstacle Br to Automobile A intrusion.

Moreover, when connecting member 46 is rearward pressed into by obstacle Br, by rearward deform or displacement connecting member 46, the front end of all side beam 12 is stretched into (Fig. 8 D power Fo) to overall width direction foreign side.On the other hand, as in fig. 8d, from When the connecting member 46 that is further deformed under obstacle Br load is disturbed with distance piece 56, by the distance piece 56 by front side Beam 12 just presses (Fig. 8 D power Fi) into overall width direction.Thus, as illustrated in fig. 8e, being located in power unit P of all side beam 12 Part on the outside of overall width direction, bending is produced to overall width direction inner side.

By the bending, all side beam 12 just presses power unit P into overall width direction.Also, by into automobile A The cross force (inertia force) inputted as the power unit P of mass concentration portion (1), automobile A itself is to colliding opposite sidesway Dynamic (being separated relative to obstacle Br along overall width direction).Thus, further promote interlocking for automobile A and obstacle Br, can prevent or have Effect ground suppresses the local deformation of the collision side end of automobile body B.

(effect of connecting member)

Here, connecting member 46 is with one of front i.e. anterior 48F, pars intermedia 48C and the front side junction surface of pipe portion 48 Mode of the rear side than front side further off all side beam 12 is tilted 52 pipe junction surface 52C in a top view.When obstacle Br (opponent vehicles Deng) with the inclined part collide when, by the inclined part by a part for impact load be converted into collision phase The load Fy tossed about.Thus, by connecting member 46, can promote with dislocation of the obstacle Br on overall width direction, it is i.e. above-mentioned with Obstacle Br's interlocks.

Moreover, connecting member 46 is tilted as described above due to a part for front, thus with along overall width direction Extension compared with the connecting member for L-shaped from extension the, top view that the extension rearward extends, all side beam 12 is short with the link path of end plate 44.Therefore, connecting member 46 is compared with the connecting member of above-mentioned comparative example, by with small The deformation rearward or displacement of cover attack and produce the front end of all side beam 12 with less clearance (free travel distance) to car The effect of cross direction foreign side stretching.Thus, connecting member 46 significantly promotes all side beam 12 with the generation that cooperates of distance piece 56 Bending.

Moreover, the front flange 30 engaged with the front side junction surface 52 of connecting member 46 has side wall 30S.It will connect in obstacle Br Knot part 46 be rearward pressed into and by the front end of all side beam 12 to overall width direction foreign side stretch when, side wall 30S is with by the front side The mode function that the front end of beam 12 is extruded along overall width direction.Thus, by the front end of all side beam 12 to overall width direction foreign side During stretching, the shearing of bolt 42 will not be only relied upon as the comparative example without side wall 30S.Therefore, in body forward structure knot In structure 10, in small cover attack, the tensile force of overall width direction foreign side can be made to effectively act on the front end of all side beam 12.

Moreover, welded nut 38, spiral shell that the flange 52F of connecting member and all side beam 12 grade of front flange 30 are fastened in the lump Bolt 42 includes being located at the situation by the position on the inside of overall width direction than the center line for dividing all side beam 12 or so.Therefore, with only On the outside of the overall width direction relative to the center line by flange 52F compared with the structure that front flange 30 is fastened in the lump, small outer When shell is collided, the front end overall (whole cross section) of all side beam 12 is stretched to overall width direction foreign side.And then, as described above, linking Part 46 fastens flange 52F with front flange 30 in the both sides in overall width direction in the lump.Therefore, with only relative to above-mentioned center line Side by flange 52F compared with the structure that front flange 30 is fastened in the lump, load (stress) can be suppressed multiple to what is fastened in the lump Concentrate this case in specific junction in junction surface.

Thus, in vehicle body front structure 10, in small cover attack, effectively by the front end of all side beam 12 to overall width Side stretching outside direction, helps to make all side beam 12 in time produce bending in suitable position.Moreover, constituting connecting member 46 The front end 48FF of pipe portion 48 is protruded forwards than the front end of all side beam 12.Therefore, after the compression of energy-absorbing case 14, and all side beam 12 Before the compression that the load that is collided is produced, as described above, can make connecting member 46 by the front end of all side beam 12 to overall width side The action stretched outward starts.Thereby, it is possible to make the bending of all side beam 12 stably towards generation (front side on the inside of overall width direction The overbending direction of beam 12 is stable).

Moreover, in the connecting member 46 of composition vehicle body front structure 10, the front side junction surface 52 engaged with pipe portion 48 is set to Two modular constructions of mainboard 54 and reinforcing plate 55.Therefore, compared with using the comparative example of the front flange of a modular construction, Neng Gouzeng Plus the arc-welding portion with pipe portion 48.Thus, in small cover attack, it can prevent or significantly suppress pipe portion 48 to engage with front side The welding in portion 52 is peeled off, by connecting member 46, can be effectively by the front end of above-mentioned all side beam 12 on the outside of overall width direction Stretching.

And here, connecting member 46 is for example formed with the comparative example of the through hole for engaging connecting member in all side beam In, when carrying out impingement designed in the state of being provided with connecting member, in not possessing the structure of the connecting member, through hole can Collision performance can be impacted.That is, in the case where through hole engages the situation of connecting member and do not engage connecting member, Preceding collision performance may be different.Therefore, in the comparative example that all side beam is formed with the through hole of such use, it is difficult to realize with Do not possess the vehicle of connecting member structure it is common.

In contrast, flange 52F of the connecting member 46 at front side junction surface 52 is sandwiched in the front flange 30 of all side beam 12 with inhaling In the state of between the rear flange 40 of energy case 14, engaged with the front end of all side beam 12.Therefore, in vehicle body front structure 10, energy Energy absorption characteristics (for the collision performance of frontal collision) when enough preventing or suppressing the grade of all side beam 12 to collision are impacted This case, and small cover attack can be corresponded to set connecting member 46.

So, in vehicle body front structure 10, it can prevent or suppress influence of all side beam 12 to collision performance, and Body distortion caused by small cover attack is suppressed by the connecting member 46 for linking all side beam 12 and end plate 44.

Also, in vehicle body front structure 10, with not possessing the vehicle of connecting member 46 (for example, being touched to small shell The different vehicle of the counter structure that hits) between, the influence of the collision performance for frontal collision can be suppressed, and realize all side beam 12nd, energy-absorbing case 14 is common.That is, possessing for suppressing the connecting member 46 of body distortion caused by small cover attack In structure, it can realize with not possessing the common of the body structure of the vehicle of the connecting member 46.

Especially connecting member 46 is anchored on coaming plate in the rear flange 50 of rear end side using bolt 58, welded nut 59 Upper beam 26, and at the front side junction surface 52 of front, flange 30,40 is anchored in the lump using bolt 42, welded nut 38. Therefore, compared with being engaged in the comparative example of automobile body B such as by one or both of the front and back end of connecting member by welding, hold Easily realize with not possessing the common of the structure beyond the vehicle of connecting member 46, the connecting member 46.

Also, connecting member 46 is fastened and is engaged in end plate 44 along the longitudinal direction using bolt 58, welded nut 59.For example By bolt of wall portion longer in the longitudinal direction along overall width direction insertion coaming plate upper beam 26 etc. that connecting member is tight Solid comparative example in, impact load is born by the shearing of bolt.In contrast, as described above to the fastening direction of end plate 44 For fore-and-aft direction, therefore impact load can be born as axle power in connecting member 46 (the rear portion 48R of pipe portion 48).So One, shear strength of the connecting member 46 independent of bolt 58, and efficiently bear the load from obstacle Br.

(effect of distance piece)

And here, distance piece 56 is between all side beam 12 and connecting member 46, with all side beam 12 and connecting member 46 Overlappingly set along the vertical direction.Therefore, in small cover attack, rearward deformed because of impact load or displacement link When part 46 is disturbed with distance piece 56, as described above, all side beam 12 is pressed to overall width direction inner side by distance piece 56. The effect for being stretched the front end of all side beam 12 to overall width direction foreign side by the effect and above-mentioned connecting member 46, as above institute State, all side beam 12 is bent in the side of power unit, promote automobile A and obstacle Br to stagger along overall width direction.

Especially distance piece 56 is arranged on the side 12S2 of overall width direction foreign side of all side beam 12.Therefore, small outer When shell is collided, the privileged site (the setting position of distance piece 56) of all side beam 12 by distance piece 56 into overall width direction side by by Pressure.Thus, the suitable position of all side beam 12 can be made to produce bending in small cover attack.

Moreover, the anterior 48F of the pipe portion 48 of connecting member 46 in side view from preceding side engagement portion 52 towards rear substantially It is horizontally extending.Therefore, due to the load backward from obstacle Br, displacement vertically, deformation are pressed down anterior 48F System, is deformed or displacement approximately along horizontal plane.Load from the anterior 48F as by distance piece 56 by all side beam 12 The power that is just pressed into overall width direction and transmit.Thus in the transmission of the load, it can suppress to produce the component of above-below direction, because This is compared with the structure that inclined connecting member transmits load to distance piece from side view, from connecting member 46 via distance piece 56 improve to the load transmission efficiency of all side beam 12.Therefore, the bending of all side beam 12 is promoted, and after the bending of all side beam 12 Load effectively can be transmitted to power unit P, automobile A can be promoted relative to the shifting in the obstacle Br directions separated along overall width direction It is dynamic.

Moreover, the pipe junction surface 52C in the front side junction surface 52 of connecting member 46 vertically stretches relative to anterior 48F Go out, it is opposite with distance piece 56.Also via pipe junction surface 52C, the load from obstacle Br is via distance piece 56 to all side beam 12 Transmission.Thus, it can be engaged with junction surface compared with the anterior 48F of pipe portion 48 is not to the structure stretched out up and down via pipe Portion 52C, distance piece 56 are effectively transmitting impact load to all side beam 12 in a big way up and down.

In addition, in the first embodiment, connecting member 46 is shown based on the example of pipe portion 48, but it is of the invention It is not limited to this.For example, it is also possible to replace pipe portion 48, the closed cross sectional structure formed using the engagement with multiple parts Main body, as extrusion molded article (bending machining product) main body connecting member.

Moreover, in the first embodiment, the example that the rear end of connecting member 46 is engaged with end plate 44 is shown, but originally Invention is not limited to this.For example, it is also possible to the connecting member engaged using rear end with coaming plate upper beam 26, mud guard 22.

Moreover, in the first embodiment, show that front side junction surface 52 has mainboard 54 and the example of reinforcing plate 55, but It is that the present invention is not limited to this.For example, it is also possible to using the structure by making 1 piece of plate benging and sandwiching pipe portion 48 (main body) The front side junction surface of (structure that a pair of plate portions are made up of 1 block of plate).And it is it is for instance possible to use only (main from side and pipe portion 48 Body) engagement front side junction surface.In addition, for example can also be using the front side junction surface being made up of more than 3 pieces of plate.That is, front side As long as junction surface is engaged according to the load being subject in small cover attack with required intensity with pipe portion 48 (main body).

In addition, in the first embodiment, showing the pipe portion 48 of connecting member 46 has the anterior 48F as horizontal part Example, but the present invention is not limited to this.For example, it is also possible to by connecting member be configured to have it is anterior i.e. with distance piece 56 The pipe portion that part overlapping along the vertical direction tilts or bent relative to the length direction of all side beam 12 in side view.

Moreover, in the first embodiment, showing the distance piece 56 for possessing and being arranged on the side 12S2 of all side beam 12 Example, but the present invention is not limited to this.For example, distance piece 56 can be installed or integratedly be located at connecting member side, Distance piece can also be made to be supported in the other parts for constituting automobile body B.Moreover, in the structure that all side beam 12 sets distance piece 56, Distance piece 56 is not limited to fastening relative to the connected structure of all side beam 12, it would however also be possible to employ such as welding or embedded structure Deng.Furthermore, it is also possible to be set to the structure for not possessing distance piece 56.

(second embodiment)

Fig. 9 is with the structure of the major part of the three-dimensional vehicle body front structure 100 for illustrating second embodiment of the present invention. Moreover, Figure 10 illustrates vehicle body front structure 100 to overlook, Figure 11 illustrates vehicle body front structure 100 with side view.

As shown in these figures, the company of pipe portion 48 of the substitution of vehicle body front structure 100 with the closed cross-section for forming toroidal Knot part 46, and possess the connecting member 102 for the closed cross-section to form rectangular shape.Moreover, vehicle body front structure 100 replaces phase For the distance piece 56 of the configured separate of connecting member 46, and possesses the distance piece (projecting part) engaged with connecting member 102 104.Hereinafter, specifically illustrate.

(connecting member)

Connecting member 102 integratedly extends from the leading section of coaming plate upper beam 26, and leading section is fixed on before all side beam 12 Portion.Specifically, connecting member 102 is so that rear portion 102R, pars intermedia 102M and front portion 102F to be linked in the order from rear Mode is formed.

The rear portion 102R of connecting member 102 from the leading section of coaming plate upper beam 26 downward and front extend.The embodiment party The rear portion 102R of formula as shown in figure 11, is tilted with the angle close to vertical compared with level.Moreover, pars intermedia 102M is from rear portion 102R leading section is downward and front extends.Pars intermedia 102M is set in side view than rear portion 102R close to level Inclination angle, in this embodiment, is set to substantially 45 ° of inclination angle.Moreover, as shown in Figure 10, pars intermedia 102M is with vertical view Front side is tilted than rear side in overall width side upwardly close to the mode of all side beam 12 in figure.

Also, the height (overlapping along the vertical direction) that the anterior 102F of connecting member 102 is configured to all side beam 12 is equal, It is located relative on the outside of the anterior overall width direction of all side beam 12.In the lateral overall width direction in front end of the anterior 102F just extension and Reach between all side beam 12 and energy-absorbing case 14.Moreover, the overall width of connecting member 102 (mainly front portion 102F and pars intermedia 102M) Direction lateral surface be set to by rear side than front side more towards on the outside of overall width direction in the way of the flexure plane 102C that bends.

Before connected structures of the anterior 102F with all side beam 12 and energy-absorbing case 14 is illustrated, remark additionally connecting member 102 overall structure.In connecting member 102, the outside plate 108 for the section carnival hat shape being just open into overall width direction with to overall width The inner panel 110 (reference picture 10) of the section carnival hat shape of direction foreign side opening is engaged at the flange above and below mutual.Thus, even Knot part 102 is set to the closed cross sectional structure of section rectangular shape as described above.Moreover, in the anterior 102F of connecting member 102 Side, outside plate 108 is set to the section carnival hat shape of opening direction generally rearward, and inner panel 110 is in the flange with outside plate about 108 The tabular of engagement.

As shown in figure 12, flat flange 110F is from the anterior 102F of the inner panel 110 overall width direction inner end to car Extend on the inside of cross direction.The flange 108F extended from overall width direction inner end of outside plate 108 is engaged in flange 110F from front Overall width direction outside side a part.

Flange 110F thickness of slab direction forms otch along fore-and-aft direction, above-below direction pars intermedia on the inside of overall width direction. Flange 110F is clipped in the convex of rear flanges 40 of the flange body 30F of the front flange 30 located at all side beam 12 with being located at energy-absorbing case 14 Between edge main body 40F.Also, flange 110F screws togather 4 formed fastening positions welded nut 38 and bolt 42, passes through Fasten and be engaged between flange body 30F and flange body 40F in the lump.The flange 110F of the connecting member 102 is equivalent to connecing Plywood portion.

Position of the front end of connecting member 102 described above positioned at the front end than all side beam 12 on the front.Specifically, As shown in Fig. 9 and Figure 12, outside plate 108 has the protuberance 102P prominent forwards relative to above-mentioned flange 108F.This is dashed forward Go out position of the portion 102P front end positioned at the front end than all side beam 12 on the front.

(distance piece)

Vehicle body front structure 100 possesses the distance piece 104 engaged respectively with all side beam 12 and connecting member 102.Distance piece 104 are for example formed as flat hollow triangular prism up and down by the way that the multiple parts formed by metallic sheet material are bonded with each other Shape, the front portion from all side beam 12 is protruding outside to overall width direction.The distance piece 104 means such as by welding and before being engaged in Wall portion on the outside of the overall width direction of curb girder 12 is side 12S2.

Moreover, distance piece 104 have by rear side than front side more towards on the inside of overall width direction in the way of inclined load transmission Portion 106.The load transmitting portion 106 is configured to the wall of (rear side) on the outside of the overall width direction of distance piece 104.Specifically, distance piece 104 are constituted with inner panel 112 and outside plate 114 for major part, and the inner panel 112 is engaged in all side beam 12, and the outside plate 114 is engaged in Inner panel 112 and with the inner panel 112 constitute closed cross-section.Outside plate 114 is as shown in Figure 10, in a top view, from connecting member 102 High rigidity portion (the setting position in next door 116) described later is until the rear portion of distance piece 104 connects with the side 12S2 of all side beam 12 The junction of conjunction.

The outside plate 114 is for example thicker than inner panel 112, is made up of, is thus configured in distance piece 104 the high material of tensile strength The high part of the rigidity for load backward.Therefore, in this embodiment, it is main to constitute load biography using outside plate 114 Pass portion 106.

Moreover, being provided with front side junction surface 106A in the leading section of load transmitting portion 106.Front side junction surface 106A is along link The anterior 102F of part 102 back side 102B (the rear wall parts 116R in next door 116 described later) bending, is fastened by welding or bolt Back side 102B is engaged in etc. means.On the other hand, it is provided with rear side junction surface 106B in the rearward end of load transmitting portion 106. Side 12S2 bendings of the rear side junction surface 106B along all side beam 12, the side is engaged in by the means such as welding or bolt fastening Face 12S2.

(next door)

Moreover, as shown in FIG. 9 and 10, being provided with the anterior 102F of connecting member 102 section and being used as strengthening part Next door 116.The next door 116 is formed as the carnival hat shape to open front in top view.Specifically, next door 116, which has, forms The rear wall parts 116R of the bottom of carnival hat shape, a pair of the arm 116A extended forwards from rear wall parts 116R overall width direction two ends, The pair of right and left front flange 116F extended separated from each other along overall width direction from the front end of each arm.Rear wall parts 116R passes through welding etc. Means and be engaged in inner panel 110 formation connecting member 102 back side 102B part inner surface (preceding surface).

On the other hand, a pair of front flange 116F are engaged in the front portion of the formation in outside plate 108 102F by means such as welding Part inner surface (rear surface).More specifically, the front flange 116F on the inside of overall width direction is engaged in the shape in outside plate 108 Into the inner surface of protuberance 102P part.Moreover, the front flange 116F on the outside of overall width direction is engaged in the formation in outside plate 108 The inner surface of flexure plane 102C anterior part.

More than, in vehicle body front structure 100, form the load backward of the leading section input of oriented connecting member 102 The path transmitted via next door 116, the load transmitting portion 106 of distance piece 104 to all side beam 12.Here, the company of being set to of next door 116 The reinforcement structure of the part that load is transmitted to distance piece 104 in the anterior 102F of knot part 102.By the next door 116, even The anterior 102F of knot part 102 is formed with high rigidity portion.

On the other hand, next door 116 can it is independent as the connecting member 102 with transmitting load to coaming plate upper beam 26 and will be to A part (the front side extension of load transmitting portion 106 of the load transmission of protuberance 102P inputs to the distance piece 104 of all side beam 12 Portion).Furthermore, it is also possible to the anterior 102F of connecting member 102, next door 116 and distance piece 104 be collected as will be to relative to preceding Part (gusset) of the load transmission backward of input to all side beam 12 on the outside of the overall width direction of curb girder 12.

The other structures of the vehicle body front structure 100 of present embodiment are including part (not shown) substantially with first The vehicle body front structure 10 of embodiment is equally constituted.Therefore, by vehicle body front structure 100, by substantially with before vehicle body The same effect of portion's structure 10 can also obtain same effect.

Moreover, in vehicle body front structure 100, the load transmitting portion 106 of distance piece 104 and the back side of connecting member 102 102B is engaged.Therefore, can be via connecting member 102 (next door 116), the distance piece before since the deformation of connecting member 102 104 transmit the load from obstacle Br to the sidepiece of all side beam 12.Especially distance piece 104 is passed with load as described above Portion 106 is passed, therefore when have input impact load from the protuberance 102P of front direction connecting member 102, can be passed via load Pass portion 106 and effectively transmit load to all side beam 12.Further, it is possible near the rear end of the load transmitting portion 106 (power unit P side) make stress concentration in all side beam 12, therefore, it is possible to make all side beam 12 produce to the bending on the inside of overall width direction.

Moreover, positions of the protuberance 102P of connecting member 102 positioned at the front end than all side beam 12 on the front, therefore inhaling After energy case 14 compresses, compared with all side beam 12, impact load first acts on connecting member 102.It is used as the company of the load input unit The protuberance 102P of knot part 102 is located on the outside of overall width direction relative to all side beam 12, therefore is made by the impact load All side beam plays a role to the torque in the direction of bending on the inside of overall width direction.Accordingly, it is capable to promote all side beam 12 into overall width direction The bending of side.

More than, in vehicle body front structure 100, the dislocation in overall width directions of the automobile A relative to obstacle Br can be made from micro- Small cover attack has started to produce in a stable manner in a short time, and further promotes the dislocation.

Moreover, the leading section of the load transmitting portion 106 of distance piece 104 is engaged in the back side 102B (next doors of connecting member 102 116 rear wall parts 116R), therefore, it is possible to avoid connecting member 102 from inadvertently dividing because of impact load with load transmitting portion 106 From.Moreover, in the comparative example that distance piece 104 is not engaged with connecting member 102, due to it is usual when the ride of vehicle etc. And connecting member is inadvertently disturbed with load transmitting portion 106, so as to produce noise.In contrast, in this reality Apply in mode, as described above, the leading section of the load transmitting portion 106 of distance piece 104 is engaged in the back side 102B of connecting member 102 (the rear wall parts 116R in next door 116).Therefore, will not occur due to it is usual when the ride of vehicle etc. and make connecting member with Interference this case inadvertently occurs for load transmitting portion 106, can prevent the noise produced by the interference.

In addition, in this second embodiment, distance piece 104 is formed as triangular shaped in a top view, but of the invention This is not limited to, the shape of projecting part can suitably set change.For example projecting part can be formed as in a top view The trapezoidal shape or semicircle shape of protrusion on the outside of to overall width direction.

Moreover, in this second embodiment, the front portion of all side beam 12 is fixed on as the energy-absorbing case 14 of shock absorbing portion, but It is that the present invention is not limited to this, shock absorbing portion can also integratedly be located at the front portion of all side beam.In this case, preceding The leading section of the Charpy absorption portion of the curb girder fixedly connected part in part of side rearward.

In addition, in this second embodiment, pacifying in the anterior 102F for the connecting member 102 for being formed as hollow form section The next door 116 for strengthening part is pretended, thus anterior 102F is strengthened, but the present invention is not limited to this, can also Omit strengthening part.In this case, for example, the front portion of connecting member can be formed must than connecting member other positions (at least with the anterior adjacent position of connecting member) is thick (thickness of slab of increase material), and thus the front portion of connecting member is added By force.Moreover, the anterior rigidity preferably at least for the load of fore-and-aft direction of connecting member is high, therefore for example can be by along front and rear One or more crimpings formation of direction extension is in the front portion of connecting member.

Moreover, in this second embodiment, the anterior 102F of connecting member 102 overall width direction lateral surface is set to rear side Be located at the flexure plane 102C that bends of mode on the outside of overall width direction than front side, but the invention is not limited in this, connecting member Anterior overall width direction lateral surface can be set to the structure along fore-and-aft direction, can also be set to more towards rear side then more court To the inclined structure of mode on the outside of overall width direction.

In addition, in above-mentioned each embodiment, showing that vehicle body front structure 10 possesses link in overall width direction both sides Part 46,102, the example of distance piece 56,104, but the present invention is not limited to this.For example, can be only in overall width direction Side sets connecting member 46,102, distance piece 56,104.In this case, be not provided with above-mentioned connecting member 46,102, The side of distance piece 56,104, for example, vehicle boarded part can be also used as into distance piece, it would however also be possible to employ other replies are small The structure of cover attack.

In addition, in above-mentioned each embodiment, show front flange 30 extend to lower section and the rear end to duct member 34, The example that the front end of underbeam 32 is supported, but the present invention is not limited to this.Moreover, having invention shows front flange 30 There is the example for including a pair of sidewalls including the side wall 30S on the inside of overall width direction, but the present invention is not limited to this.Front flange 30 or instead front flange can also not have a pair of sidewalls one or both.

In addition, the present invention can carry out various changes to implement in scope without departing from the spirit, this is self-evident 's.

Hereinafter, the corresponding relation of the title in the reference and each portion used in this manual is shown.

10 vehicle body front structures

12 all side beams

14 energy-absorbing casees

22 mud guards (mud guard portion)

26 coaming plate upper beams (mud guard portion)

30 front flanges

40 rear flanges

44 end plates (mud guard portion)

46 connecting members

48 pipe portions (main body)

48F front portions (horizontal part)

52 front sides junction surface (engaging plate portions)

52C junction surfaces (opposite face)

54 mainboards (sheet material)

55 reinforcing plates (sheet material)

102 connecting members

110F flanges (engaging plate portions)

Claims

1. a kind of vehicle body front structure, possesses：

All side beam, front flange is formed with front side of vehicle fore-and-aft direction；

Energy-absorbing case, is engaged at the rear flange that is formed of rear side of vehicle fore-and-aft direction with the front flange；And

Connecting member, before and after inner panel and the closed cross sectional structure of outside plate Formation cross-section rectangular shape, the vehicle of the connecting member The rear side in direction is engaged with mud guard portion, and from the overall width direction inner end of the front side of the vehicle fore-and-aft direction of the inner panel to The engaging plate portions extended on the inside of overall width direction are engaged in institute with the state being sandwiched between the front flange and the rear flange State front flange, also, be located at relative to all side beam part on the outside of overall width direction vehicle fore-and-aft direction front side with The mode that rear side leaves all side beam to overall width direction outside compared with the front side of vehicle fore-and-aft direction in top view is tilted.

2. vehicle body front structure according to claim 1, wherein,

The connecting member is configured to comprising orthogonal cross-sections orthogonal to the longitudinal direction for closed cross sectional structure and before and after vehicle The main body of the engaging plate portions is bonded on front side of direction,

The engaging plate portions be configured to comprising with clipped in sectional view the state of the main body by arc-welding respectively with the main body The two plates of engagement.

3. vehicle body front structure according to claim 1, wherein,

The connecting member is fastened the engaging plate portions with the front flange and rear flange by fastener in the lump, and by tight Firmware will be anchored on the mud guard portion on rear side of vehicle fore-and-aft direction.

4. vehicle body front structure according to claim 2, wherein,

5. according to vehicle body front structure according to any one of claims 1 to 4, wherein,

The front flange has the side of sidewall portion opposite with the medial surface in the overall width direction of all side beam.

6. according to vehicle body front structure according to any one of claims 1 to 4, wherein,

The engaging plate portions being connect relative to overall width direction center by the part on the inside of overall width direction at least in all side beam Together in the front flange.

7. vehicle body front structure according to claim 5, wherein,

8. the vehicle body front structure according to any one of Claims 1 to 4,7, wherein,

The inboard portion and outside of relative to overall width direction center leaning on overall width direction of the engaging plate portions in all side beam It is partially engaged to the front flange.

9. vehicle body front structure according to claim 5, wherein,

10. vehicle body front structure according to claim 6, wherein,